Home Forums SYSTEM 16QAM on CO-ofdm transmission

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    • #48565
      sara fettach
      Participant

      hi,
      I realized an optical transmission scheme with the co-ofdm technique and 4QAM, when I change the value of QAM to 16qam or 32qam the bER becomes 1
      please what is the solution to get a BER lower

    • #48986

      Start with B2B scheme (without any Transmission fiber), if it got better then the problem with the fiber parameters like nonlinearities and dispersion. if there was no improvement in BER in B2B then remove (minimize) the system noise or change the power level!
      hope that helps,
      thanks
      Mohamed Abouseif

    • #49007
      anh tong
      Participant

      Hi Mohamed Abouseif
      Can you help me for OFDM-ROF project?
      I can’t make 4QAM 8QAM 16QAM and 64QAM.
      I attached file.
      I’m sorry for my language.
      Thank you.

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